In general, Harvest Moon plays more like a sandbox game (limited to your local area) more than anything else. They tend to be short on tutorials, because the early games didn't really have much of a goal, beyond that which you set for yourself. Even in the later ones, the goals are usually very generous, and give you plenty of time to meet them. That gives you freedom to experiment without worrying you're screwing up your game.
The original game for SNES had a hard time limit, but you could abuse the fact that it didn't actually advance until you slept. So it was easy to clear the field the very first day.
In essence, Harvest Moon is a time management simulation. You can "succeed" by doing as much (or as little) as you want. The only limiter is your stamina. If you're going for pure efficiency, so you waste as little time as possible, then you're going to need to look online. This, however, is definitely not a requirement. Harvest Moon does not have missable items (although, some could require rather extensive effort and preparation in order to acquire), so there's no time crunch required so you don't miss anything.
The only restriction on irreversible choices are your marriage candidates. Once you've married one of them, you can't get rid of them and choose someone else. They're with you until death (or a save reset) do you part. Note that there usually is a time limit on how long you have to court your chosen. You have roughly four or five years before they marry their other option. That's easily enough time to choose the one you want, and court them, and have several years to spare. So the time limit is very generous.
Note that for your chosen game, I couldn't find any info on marrying anyone. It may not be included in that one, in which case, there's nothing at all to worry about time-wise.